Home / 5,199.11-7,799.70-1,688.47

Finding the Fourth Proportional to 5,199.11, 7,799.70 and 1,688.47

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Solution

The fourth proportional to 5,199.11, 7,799.70 and 1,688.47 is: 2,533.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,199.11 : 7,799.70 = 1,688.47 : x
  2. Step 2: Convert to fraction form
    5,199.11/7,799.70 = 1,688.47/x
  3. Step 3: Cross multiply
    5,199.11x = 7,799.70 × 1,688.47
  4. Step 4: Simplify right side
    5,199.11x = 13,169,539.96
  5. Step 5: Solve for x
    x = 13,169,539.96/5,199.11
  6. Step 6: Final answer
    x = 2,533.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.